Assertion: The total absolute measured electrical conductivity of an aqueous surfactant solution drops incredibly sharply the instant the concentration crosses precisely above the CMC. Reason: The mas

Question

Assertion: The total absolute measured electrical conductivity of an aqueous surfactant solution drops incredibly sharply the instant the concentration crosses precisely above the CMC. 
Reason: The massive surfactant molecules undergo immediate spontaneous chemical degradation above the CMC, entirely destroying all ionic charges.

Prashant Kotian · Accepted Answer

Correct answer: C. The Assertion is strictly true: when the concentration crosses the CMC, independent mobile ions aggregate into massive, bulky, highly hindered micelles, massively lowering their ionic mobility and therefore dropping bulk conductivity. The Reason is completely false: the molecules do not chemically degrade or decompose; they simply physically aggregate (associate) via their hydrophobic tails.

💡 Solution & Explanation

Practice 22,000+ questions like this